Optical heart sensor vs ECG?

What’s the difference between an optical heart sensor reading and an ECG reading (that’s not available on the SE watch series)?

iPhone 8 Plus, iOS 13

Posted on Oct 5, 2020 12:00 PM

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1 reply

Oct 5, 2020 12:24 PM in response to SaunSaun

Read here;

Your heart rate

And here;

Taking an ECG with the ECG app on Apple Watch

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Optical heart sensor vs ECG?

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